The Mystery Gang volunteers to work on Daphne’s movie-directing uncle’s movie about an ape man. Superstition has it that the ape man is real, but The Mystery Gang doesn’t believe it -- that is, until they come face-to-face with the real ape man!

The Mystery Gang is passing by Funland, a new theme park that has yet to be opened.
All of a sudden, everything turns on, and begins working. They decide to have a little fun, so they check out the place. Shaggy decides to get something to eat and with no one at the counter, his order comes up!
Then, Fred plays the game where you knock down milk bottles with a baseball, and wins. Suspiciously, his prize appears when they have their backs turned for ten seconds. When Fred tips them a dime, it disappears and rings up on the cash register!
Shaggy and Scooby see a mysterious man in blue walk at a lightning speed through rooms, entering and leaving.
Finally, The Mystery Gang decides to tell the museum caretakers, a couple who live near the theme park. They explain how everything was up and running, and about the mysterious blue man. The caretakers tell them that they are crazy, and how it’s impossible that everything was working.

The Mystery Gang aids a professor who is putting up the exhibit for an ancient mummy. The mummy, according to local superstition, will come back to life if he is ever disturbed. Coming back from the malt shop, The Mystery Gang discovers that the mummy is gone! They decide to investigate it after finding some weird clues.

The Mystery Gang, while returning, empty handed, from a fishing trip, take a short cut through a scary swamp, and run into a zombie! Lost, The Mystery Gang goes to the near town of Swamp's End. Only two people reside in Swamp's End -- Zeke and Zeb, cousins. There, they learn of the Bayou Witch, who conjured the zombie that they'd seen earlier. While investigating the crime, Scooby and Shaggy go to Zeb's house, where he isn't at, but a voodoo doll of him! T.M.G. decide to go to the swamp to see find the Bayou Witch's home, and find voodoo dolls of themselves, along with...THE BAYOU WITCH!

Redbeard the Pirate hijacks C.L. Magnus’s ship, so The Mystery Gang decides to investigate the crime. C.L. Magnus tells them that his ancient ancestors are the ones who captured Redbeard, and Redbeard’s ghost seeks revenge.

The Mystery Machine goes on ’e’ when going through the country, and The Mystery Gang are threatened by a farmer who is furious with reporters who keep bothering him. The town is haunted by a UFO and the alien who is operating it, so The Mystery Gang decide to follow the UFO after they get gas. It appears that the machine was recently operated, so they split up, and search for the alien. Scooby and Shaggy have the first encounter with the alien, who corners the both of them!

Scooby has inherited $1,000,000 because he saved a wealthy man -- Colonel Beauregard Sanders -- several years ago. As a catch, The Mystery Gang must spend the night in the haunted Sanders family mansion. While there, the mansion really does prove to be haunted, after strange events begin occurring.

The Mystery Machine stops by the Wolf’s Edge Lodge, a mysterious ski resort in the mountains. The owner warns them of the Snow Ghost, who catches people, then turns them into ghosts, as well. He advises them to keep their windows and doors locked. As soon as the lodge owner leaves, the Snow Ghost shows up outside the window! While trailing the Snow Ghost, The Mystery Gang see the Snow Ghost soar up into the air, and into the forest!